|Year|Competition|Venue|Position|Event|Notes|
|---|---|---|---|---|---|
|1998|Turin Marathon|Turin, Italy|3rd|Marathon|2:12:59|
|2003|Lisbon Marathon|Lisbon, Portugal|1st|Marathon|2:15:31|
|2004|Vienna Marathon|Vienna, Austria|3rd|Marathon|2:11:24|
|2004|Berlin Marathon|Berlin, Germany|5th|Marathon|2:09:08|
|2005|World Championships|Helsinki, Finland|18th|Marathon|2:16:33|
|2006|Paris Marathon|Paris, France|4th|Marathon|2:08:55|
|2006|Lisbon Marathon|Lisbon, Portugal|1st|Marathon|2:21:08|
|2007|World Championships|Osaka, Japan|—|Marathon|DNS|

Question: how many years after the turin marathon did the berlin marathon occur?
Answer: 6